I just gave it a try and for whatever reason it wouldn't work.I changed the avatar to a 'stock' avatar with success. From there I was able to reload my mug.

You may want to kill any apps that would be uploading data which could interfere, especially if it runs on the same port, or even give another browser a whirl. Of course there is always the ever popular restart.

Indeed I did, but then I realized something else. At the time I was uploading, I was also using NetZero HighSpeed. I found out a few minutes ago while messing with settings that this program caches internet files on it's own to speed things up. I cleared that and bingo! It worked!

That's what's always so funny about computer bugs. It's often a small thing that is easy to overlook.